diff --git a/README.md b/README.md
index b5ed1cd..5a20a10 100644
--- a/README.md
+++ b/README.md
@@ -48,6 +48,28 @@ import { MailgunModule } from '@nextnm/nestjs-mailgun';
 export class YourModule {}
 ```
 
+#### Importing module Async
+
+```typescript
+import { MailgunModule } from '@nextnm/nestjs-mailgun';
+@Module({
+  imports: [
+    MailgunModule.forAsyncRoot({
+      useFactory: async () => {
+        return {
+          DOMAIN: '<Your Domain>',
+          API_KEY: '<Your API_KEY>',
+          HOST: '<Your Host>', // default: 'api.mailgun.net'. Note that if you are using the EU region the host should be set to 'api.eu.mailgun.net'
+        };
+      },
+    }),
+  ],
+  providers: [],
+  exports: [],
+})
+export class YourModule {}
+```
+
 #### Interfaces
 
 ```typescript
@@ -61,7 +83,7 @@ interface EmailOptions {
   attachment?;
   'recipient-variables'?: {
     [email: string]: any;
-  }
+  };
 }
 ```
 
diff --git a/package-lock.json b/package-lock.json
index 3166ad3..4922653 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "@nextnm/nestjs-mailgun",
-  "version": "1.0.3",
+  "version": "1.0.4",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index 3ed8e87..3512499 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@nextnm/nestjs-mailgun",
-  "version": "1.0.3",
+  "version": "1.0.4",
   "description": "NestJS provider for sending emails with mailgun",
   "author": "Nuno Carvalhão <nuno.carvalhao@gmail.com>",
   "license": "MIT",
diff --git a/src/nestjs-mailgun/configuration.ts b/src/nestjs-mailgun/configuration.ts
index d9b3a86..1ef0808 100644
--- a/src/nestjs-mailgun/configuration.ts
+++ b/src/nestjs-mailgun/configuration.ts
@@ -1,6 +1,16 @@
+import { ModuleMetadata } from '@nestjs/common/interfaces';
+
 export interface ConfigurationMailgun {
   DOMAIN: string;
   API_KEY: string;
   PUBLIC_API_KEY?: string;
   HOST?: string;
 }
+
+export interface ConfigurationMailgunAsync
+  extends Pick<ModuleMetadata, 'imports'> {
+  useFactory: (
+    ...args: any[]
+  ) => ConfigurationMailgun | Promise<ConfigurationMailgun>;
+  inject?: any[];
+}
diff --git a/src/nestjs-mailgun/mailgun.module.ts b/src/nestjs-mailgun/mailgun.module.ts
index 14efc39..f7ff90b 100644
--- a/src/nestjs-mailgun/mailgun.module.ts
+++ b/src/nestjs-mailgun/mailgun.module.ts
@@ -1,7 +1,10 @@
-import { Module } from '@nestjs/common';
-import { ConfigurationMailgun } from './configuration';
+import { Module, Provider } from '@nestjs/common';
+import {
+  ConfigurationMailgun,
+  ConfigurationMailgunAsync,
+} from './configuration';
 import { MailgunService } from './services/relay/mailgun.service';
-import { API_KEY, DOMAIN, HOST, PUBLIC_API_KEY } from './tokens/tokens';
+import { MAILGUN_CONFIGURATION } from './tokens/tokens';
 
 @Module({})
 export class MailgunModule {
@@ -12,16 +15,30 @@ export class MailgunModule {
       //     ...controllers,
       //   ],
       providers: [
-        { provide: API_KEY, useValue: config.API_KEY },
-        {
-          provide: PUBLIC_API_KEY,
-          useValue: config.PUBLIC_API_KEY ? config.PUBLIC_API_KEY : '',
-        },
-        { provide: DOMAIN, useValue: config.DOMAIN },
-        { provide: HOST, useValue: config.HOST || 'api.mailgun.net' },
+        { provide: MAILGUN_CONFIGURATION, useValue: config },
         MailgunService,
       ],
       exports: [MailgunService],
     };
   }
+  public static forAsyncRoot(config: ConfigurationMailgunAsync) {
+    return {
+      module: MailgunModule,
+      //   controllers: [
+      //     ...controllers,
+      //   ],
+      imports: config.imports || [],
+      providers: [this.createAsyncProviders(config), MailgunService],
+      exports: [MailgunService],
+    };
+  }
+  private static createAsyncProviders(
+    options: ConfigurationMailgunAsync,
+  ): Provider {
+    return {
+      provide: MAILGUN_CONFIGURATION,
+      useFactory: options.useFactory,
+      inject: options.inject || [],
+    };
+  }
 }
diff --git a/src/nestjs-mailgun/services/relay/mailgun.service.ts b/src/nestjs-mailgun/services/relay/mailgun.service.ts
index 2155f2c..1ab637e 100644
--- a/src/nestjs-mailgun/services/relay/mailgun.service.ts
+++ b/src/nestjs-mailgun/services/relay/mailgun.service.ts
@@ -1,6 +1,7 @@
 import { Injectable, Inject } from '@nestjs/common';
-import { API_KEY, DOMAIN, HOST, PUBLIC_API_KEY } from '../../tokens/tokens';
+import { MAILGUN_CONFIGURATION } from '../../tokens/tokens';
 import * as mailgunConfig from 'mailgun-js';
+import { ConfigurationMailgun } from '../../../nestjs-mailgun/configuration';
 
 export interface EmailOptions {
   from: string;
@@ -18,12 +19,15 @@ export interface EmailOptions {
 export class MailgunService {
   private readonly mailgun;
   constructor(
-    @Inject(API_KEY) private readonly apiKey,
-    @Inject(DOMAIN) private readonly domain,
-    @Inject(HOST) private readonly host,
-    @Inject(PUBLIC_API_KEY) private readonly publicApiKey,
+    @Inject(MAILGUN_CONFIGURATION)
+    private readonly configuration: ConfigurationMailgun,
   ) {
-    this.mailgun = mailgunConfig({ apiKey, domain, publicApiKey, host });
+    this.mailgun = mailgunConfig({
+      apiKey: configuration.API_KEY,
+      domain: configuration.DOMAIN,
+      publicApiKey: configuration.PUBLIC_API_KEY,
+      host: configuration.HOST,
+    });
   }
 
   public sendEmail(emailOptions: EmailOptions): Promise<boolean> {
@@ -46,8 +50,7 @@ export class MailgunService {
           resolve(false);
         }
         if (err) {
-          console.log('ERRRP', err);
-
+          console.log('ERR', err);
           reject(err);
         }
       });
diff --git a/src/nestjs-mailgun/tokens/tokens.ts b/src/nestjs-mailgun/tokens/tokens.ts
index f95dbb0..20fc2eb 100644
--- a/src/nestjs-mailgun/tokens/tokens.ts
+++ b/src/nestjs-mailgun/tokens/tokens.ts
@@ -1,4 +1 @@
-export const API_KEY = 'API_KEY';
-export const PUBLIC_API_KEY = 'PUBLIC_API_KEY';
-export const DOMAIN = 'DOMAIN';
-export const HOST = 'HOST';
+export const MAILGUN_CONFIGURATION = 'MAILGUN_CONFIGURATION';